U.S. General Services Administration
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Call: 855-482-4348
Hours for live chat and calls:
Sun 8 p.m. - Fri 8:30 p.m. CST
Email: ITCSC@gsa.gov
MAS Modification Instructions for MAS Information Technology
Please visit the Modification Help Center for assistance in using the eMod System.
Need additional help sending changes? Please visit the Vendor Support Center or email ITCSC@gsa.gov.
Contact your Procurement Contracting Officer (PCO) for any questions about your submission.
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